
Phosphorus Cybersecurity
Phosphorus Cybersecurity is a cybersecurity company specializing in Cyber-Physical Security, founded in 2017 and headquartered in Nashville, United States. It has raised $70M in equity across 4 priced rounds, employs about 30 people, and was acquired by Dragos in 2026.
updated Oct 11, 2026
Latest Phosphorus Cybersecurity news and company activity
What Phosphorus Cybersecurity did, dated — selected moves from the record, one per kind, newest first.
- Jun 2026AcquiredDragos Acquires Phosphorus to Bring OT-Native Cybersecurity to the Full xOT Environment
- Nov 2025Pricing changePhosphorus Declares Independence from Opaque CPS Security Pricing and Passive Discovery Vendors
- Sep 2025Exec changePhosphorus Names Brett Raphael as Chief Revenue Officer
- Feb 2022Funding round
Phosphorus Cybersecurity funding
Phosphorus Cybersecurity has raised $70M in priced equity. Its most recent round was a Venture Round in April 2025.
- Equity raised
- $70M4 priced rounds
- Last round
- Venture RoundApr 2025
Phosphorus Cybersecurity employees and hiring
Phosphorus Cybersecurity has about 30 employees.
- Employees
- 30
- 30-day change
- 0%
- Open roles
- 0
Phosphorus Cybersecurity competitors
Security professionals most often compare Phosphorus Cybersecurity against Dragos on cybersectools.com. The full competitive set, with overlap scoring, is in the platform.
ranked by CybersecTools comparison demand, 90 days
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The other 440 data points.
- Funding historyevery round, every investor named
- Headcount growthvelocity, departments, seniority
- Open jobslive postings, hiring pace, role mix
- Tech stackframeworks, clouds, security









